The hypothalamus produces thyrotropin-releasing hormone (TRH), which stimulates the pituitary gland to release thyroid-stimulating hormone (TSH).
Water Opal is a colourless, clear opal with a play of colour. It is rare and valuable in the Realms, where it is used in scrying devices.ater Opals are valuable gems in the game which may be found. This item appears in Baldur's Gate (game) , Baldur's Gate: Enhanced Edition, Baldur's Gate II: Shadows of Amn and Baldur's Gate II: Enhanced Edition.
Caring for your Opal. Solid Opals - Opal is a soft stone, approximately the same hardness as glass (around 6.5 on Moh's hardness scale), so it is important to treat your opal carefully in order to avoid damaging it. Remove your opal jewellery if there is a chance it will be scratched or broken (i.e. working in the garden, moving furniture, etc.)